Decanoic acid, monoester with glycerol

Water solubility

Link to relevant study record(s)

Reference

Endpoint:

water solubility

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

study well documented, meets generally accepted scientific principles, acceptable for assessment

Reason / purpose for cross-reference:

reference to same study

Principles of method if other than guideline:

Determination of critical micelle concentration (CMC)

GLP compliance:

no

Type of method:

other: CMC determination

Key result

Water solubility:

ca. 0.6 g/L

Conc. based on:

other: critical micelle concentration

Temp.:

33 °C

Remarks on result:

other: no information about pH

The results of single measurements are given in the table and presented graphically in the figure attached. The CMC is extrapolated as ca. 0.6 g/L. The real surface tension is surface tension at 20 °C (293 K) recalculated from 33 °C (306 K) according to the Eötvös equation: ϭ(293 K) = ϭ(T)*(1 -0.002(T-291)), where T is in K. This does not influence the CMC determination, and therefore the CMC result is given at the temperature of the measurement, i.e. 33 °C.

Sample	Concentration [g/L]	ϭ1	ϭ2	ϭ3	ϭ_mean	T [°C]	ϭ_real
blank	0.0	73.3	73.3	73.3	73.30	20	73.30
1	0.1	35.7	35.3	34.9	35.30	33	34.24
2	0.5	26.6	26.6	26.8	26.67	33	25.87
3	1.0	25.2	25.4	24.7	25.10	33	24.35
4	1.5	24.4	24.5	24.5	24.47	33	23.73
5	2.0	24.4	24.5	24.5	24.47	33	23.73
6	2.5	24.5	24.5	24.5	24.53	33	23.80
7	3.0	24.5	24.6	24.6	24.57	33	23.83
8	5.0	24.5	24.5	24.6	24.53	33	23.80
9	7.5	24.5	24.5	24.6	24.53	33	23.80

Description of key information

Water solubility: ca. 0.6 g/L at 33 °C (derived from Critical Micelle Concentration study)

Key value for chemical safety assessment

Water solubility:

0.6 g/L

at the temperature of:

33 °C